1 /*
2     ivtv driver initialization and card probing
3     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
4     Copyright (C) 2004  Chris Kennedy <c@groovy.org>
5     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
6 
7     This program is free software; you can redistribute it and/or modify
8     it under the terms of the GNU General Public License as published by
9     the Free Software Foundation; either version 2 of the License, or
10     (at your option) any later version.
11 
12     This program is distributed in the hope that it will be useful,
13     but WITHOUT ANY WARRANTY; without even the implied warranty of
14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15     GNU General Public License for more details.
16 
17     You should have received a copy of the GNU General Public License
18     along with this program; if not, write to the Free Software
19     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20  */
21 
22 /* Main Driver file for the ivtv project:
23  * Driver for the Conexant CX23415/CX23416 chip.
24  * Author: Kevin Thayer (nufan_wfk at yahoo.com)
25  * License: GPL
26  *
27  * -----
28  * MPG600/MPG160 support by  T.Adachi <tadachi@tadachi-net.com>
29  *                      and Takeru KOMORIYA<komoriya@paken.org>
30  *
31  * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
32  *                using information provided by Jiun-Kuei Jung @ AVerMedia.
33  *
34  * Kurouto Sikou CX23416GYC-STVLP tested by K.Ohta <alpha292@bremen.or.jp>
35  *                using information from T.Adachi,Takeru KOMORIYA and others :-)
36  *
37  * Nagase TRANSGEAR 5000TV, Aopen VA2000MAX-STN6 and I/O data GV-MVP/RX
38  *                version by T.Adachi. Special thanks  Mr.Suzuki
39  */
40 
41 #include "ivtv-driver.h"
42 #include "ivtv-version.h"
43 #include "ivtv-fileops.h"
44 #include "ivtv-i2c.h"
45 #include "ivtv-firmware.h"
46 #include "ivtv-queue.h"
47 #include "ivtv-udma.h"
48 #include "ivtv-irq.h"
49 #include "ivtv-mailbox.h"
50 #include "ivtv-streams.h"
51 #include "ivtv-ioctl.h"
52 #include "ivtv-cards.h"
53 #include "ivtv-vbi.h"
54 #include "ivtv-routing.h"
55 #include "ivtv-controls.h"
56 #include "ivtv-gpio.h"
57 #include <linux/dma-mapping.h>
58 #include <media/tveeprom.h>
59 #include <media/i2c/saa7115.h>
60 #include "tuner-xc2028.h"
61 #include <uapi/linux/sched/types.h>
62 
63 /* If you have already X v4l cards, then set this to X. This way
64    the device numbers stay matched. Example: you have a WinTV card
65    without radio and a PVR-350 with. Normally this would give a
66    video1 device together with a radio0 device for the PVR. By
67    setting this to 1 you ensure that radio0 is now also radio1. */
68 int ivtv_first_minor;
69 
70 /* Callback for registering extensions */
71 int (*ivtv_ext_init)(struct ivtv *);
72 EXPORT_SYMBOL(ivtv_ext_init);
73 
74 /* add your revision and whatnot here */
75 static const struct pci_device_id ivtv_pci_tbl[] = {
76 	{PCI_VENDOR_ID_ICOMP, PCI_DEVICE_ID_IVTV15,
77 	 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
78 	{PCI_VENDOR_ID_ICOMP, PCI_DEVICE_ID_IVTV16,
79 	 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
80 	{0,}
81 };
82 
83 MODULE_DEVICE_TABLE(pci,ivtv_pci_tbl);
84 
85 /* ivtv instance counter */
86 static atomic_t ivtv_instance = ATOMIC_INIT(0);
87 
88 /* Parameter declarations */
89 static int cardtype[IVTV_MAX_CARDS];
90 static int tuner[IVTV_MAX_CARDS] = { -1, -1, -1, -1, -1, -1, -1, -1,
91 				     -1, -1, -1, -1, -1, -1, -1, -1,
92 				     -1, -1, -1, -1, -1, -1, -1, -1,
93 				     -1, -1, -1, -1, -1, -1, -1, -1 };
94 static int radio[IVTV_MAX_CARDS] = { -1, -1, -1, -1, -1, -1, -1, -1,
95 				     -1, -1, -1, -1, -1, -1, -1, -1,
96 				     -1, -1, -1, -1, -1, -1, -1, -1,
97 				     -1, -1, -1, -1, -1, -1, -1, -1 };
98 static int i2c_clock_period[IVTV_MAX_CARDS] = { -1, -1, -1, -1, -1, -1, -1, -1,
99 					       -1, -1, -1, -1, -1, -1, -1, -1,
100 					       -1, -1, -1, -1, -1, -1, -1, -1,
101 					       -1, -1, -1, -1, -1, -1, -1, -1 };
102 
103 static unsigned int cardtype_c = 1;
104 static unsigned int tuner_c = 1;
105 static int radio_c = 1;
106 static unsigned int i2c_clock_period_c = 1;
107 static char pal[] = "---";
108 static char secam[] = "--";
109 static char ntsc[] = "-";
110 
111 /* Buffers */
112 
113 /* DMA Buffers, Default size in MB allocated */
114 #define IVTV_DEFAULT_ENC_MPG_BUFFERS 4
115 #define IVTV_DEFAULT_ENC_YUV_BUFFERS 2
116 #define IVTV_DEFAULT_ENC_VBI_BUFFERS 1
117 /* Exception: size in kB for this stream (MB is overkill) */
118 #define IVTV_DEFAULT_ENC_PCM_BUFFERS 320
119 #define IVTV_DEFAULT_DEC_MPG_BUFFERS 1
120 #define IVTV_DEFAULT_DEC_YUV_BUFFERS 1
121 /* Exception: size in kB for this stream (MB is way overkill) */
122 #define IVTV_DEFAULT_DEC_VBI_BUFFERS 64
123 
124 static int enc_mpg_buffers = IVTV_DEFAULT_ENC_MPG_BUFFERS;
125 static int enc_yuv_buffers = IVTV_DEFAULT_ENC_YUV_BUFFERS;
126 static int enc_vbi_buffers = IVTV_DEFAULT_ENC_VBI_BUFFERS;
127 static int enc_pcm_buffers = IVTV_DEFAULT_ENC_PCM_BUFFERS;
128 static int dec_mpg_buffers = IVTV_DEFAULT_DEC_MPG_BUFFERS;
129 static int dec_yuv_buffers = IVTV_DEFAULT_DEC_YUV_BUFFERS;
130 static int dec_vbi_buffers = IVTV_DEFAULT_DEC_VBI_BUFFERS;
131 
132 static int ivtv_yuv_mode;
133 static int ivtv_yuv_threshold = -1;
134 static int ivtv_pci_latency = 1;
135 
136 int ivtv_debug;
137 #ifdef CONFIG_VIDEO_ADV_DEBUG
138 int ivtv_fw_debug;
139 #endif
140 
141 static int tunertype = -1;
142 static int newi2c = -1;
143 
144 module_param_array(tuner, int, &tuner_c, 0644);
145 module_param_array(radio, int, &radio_c, 0644);
146 module_param_array(cardtype, int, &cardtype_c, 0644);
147 module_param_string(pal, pal, sizeof(pal), 0644);
148 module_param_string(secam, secam, sizeof(secam), 0644);
149 module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
150 module_param_named(debug,ivtv_debug, int, 0644);
151 #ifdef CONFIG_VIDEO_ADV_DEBUG
152 module_param_named(fw_debug, ivtv_fw_debug, int, 0644);
153 #endif
154 module_param(ivtv_pci_latency, int, 0644);
155 module_param(ivtv_yuv_mode, int, 0644);
156 module_param(ivtv_yuv_threshold, int, 0644);
157 module_param(ivtv_first_minor, int, 0644);
158 
159 module_param(enc_mpg_buffers, int, 0644);
160 module_param(enc_yuv_buffers, int, 0644);
161 module_param(enc_vbi_buffers, int, 0644);
162 module_param(enc_pcm_buffers, int, 0644);
163 module_param(dec_mpg_buffers, int, 0644);
164 module_param(dec_yuv_buffers, int, 0644);
165 module_param(dec_vbi_buffers, int, 0644);
166 
167 module_param(tunertype, int, 0644);
168 module_param(newi2c, int, 0644);
169 module_param_array(i2c_clock_period, int, &i2c_clock_period_c, 0644);
170 
171 MODULE_PARM_DESC(tuner, "Tuner type selection,\n"
172 			"\t\t\tsee tuner.h for values");
173 MODULE_PARM_DESC(radio,
174 		 "Enable or disable the radio. Use only if autodetection\n"
175 		 "\t\t\tfails. 0 = disable, 1 = enable");
176 MODULE_PARM_DESC(cardtype,
177 		 "Only use this option if your card is not detected properly.\n"
178 		 "\t\tSpecify card type:\n"
179 		 "\t\t\t 1 = WinTV PVR 250\n"
180 		 "\t\t\t 2 = WinTV PVR 350\n"
181 		 "\t\t\t 3 = WinTV PVR-150 or PVR-500\n"
182 		 "\t\t\t 4 = AVerMedia M179\n"
183 		 "\t\t\t 5 = YUAN MPG600/Kuroutoshikou iTVC16-STVLP\n"
184 		 "\t\t\t 6 = YUAN MPG160/Kuroutoshikou iTVC15-STVLP\n"
185 		 "\t\t\t 7 = YUAN PG600/DIAMONDMM PVR-550 (CX Falcon 2)\n"
186 		 "\t\t\t 8 = Adaptec AVC-2410\n"
187 		 "\t\t\t 9 = Adaptec AVC-2010\n"
188 		 "\t\t\t10 = NAGASE TRANSGEAR 5000TV\n"
189 		 "\t\t\t11 = AOpen VA2000MAX-STN6\n"
190 		 "\t\t\t12 = YUAN MPG600GR/Kuroutoshikou CX23416GYC-STVLP\n"
191 		 "\t\t\t13 = I/O Data GV-MVP/RX\n"
192 		 "\t\t\t14 = I/O Data GV-MVP/RX2E\n"
193 		 "\t\t\t15 = GOTVIEW PCI DVD\n"
194 		 "\t\t\t16 = GOTVIEW PCI DVD2 Deluxe\n"
195 		 "\t\t\t17 = Yuan MPC622\n"
196 		 "\t\t\t18 = Digital Cowboy DCT-MTVP1\n"
197 		 "\t\t\t19 = Yuan PG600V2/GotView PCI DVD Lite\n"
198 		 "\t\t\t20 = Club3D ZAP-TV1x01\n"
199 		 "\t\t\t21 = AverTV MCE 116 Plus\n"
200 		 "\t\t\t22 = ASUS Falcon2\n"
201 		 "\t\t\t23 = AverMedia PVR-150 Plus\n"
202 		 "\t\t\t24 = AverMedia EZMaker PCI Deluxe\n"
203 		 "\t\t\t25 = AverMedia M104 (not yet working)\n"
204 		 "\t\t\t26 = Buffalo PC-MV5L/PCI\n"
205 		 "\t\t\t27 = AVerMedia UltraTV 1500 MCE\n"
206 		 "\t\t\t28 = Sony VAIO Giga Pocket (ENX Kikyou)\n"
207 		 "\t\t\t 0 = Autodetect (default)\n"
208 		 "\t\t\t-1 = Ignore this card\n\t\t");
209 MODULE_PARM_DESC(pal, "Set PAL standard: BGH, DK, I, M, N, Nc, 60");
210 MODULE_PARM_DESC(secam, "Set SECAM standard: BGH, DK, L, LC");
211 MODULE_PARM_DESC(ntsc, "Set NTSC standard: M, J (Japan), K (South Korea)");
212 MODULE_PARM_DESC(tunertype,
213 		"Specify tuner type:\n"
214 		"\t\t\t 0 = tuner for PAL-B/G/H/D/K/I, SECAM-B/G/H/D/K/L/Lc\n"
215 		"\t\t\t 1 = tuner for NTSC-M/J/K, PAL-M/N/Nc\n"
216 		"\t\t\t-1 = Autodetect (default)\n");
217 MODULE_PARM_DESC(debug,
218 		 "Debug level (bitmask). Default: 0\n"
219 		 "\t\t\t   1/0x0001: warning\n"
220 		 "\t\t\t   2/0x0002: info\n"
221 		 "\t\t\t   4/0x0004: mailbox\n"
222 		 "\t\t\t   8/0x0008: ioctl\n"
223 		 "\t\t\t  16/0x0010: file\n"
224 		 "\t\t\t  32/0x0020: dma\n"
225 		 "\t\t\t  64/0x0040: irq\n"
226 		 "\t\t\t 128/0x0080: decoder\n"
227 		 "\t\t\t 256/0x0100: yuv\n"
228 		 "\t\t\t 512/0x0200: i2c\n"
229 		 "\t\t\t1024/0x0400: high volume\n");
230 #ifdef CONFIG_VIDEO_ADV_DEBUG
231 MODULE_PARM_DESC(fw_debug,
232 		 "Enable code for debugging firmware problems.  Default: 0\n");
233 #endif
234 MODULE_PARM_DESC(ivtv_pci_latency,
235 		 "Change the PCI latency to 64 if lower: 0 = No, 1 = Yes,\n"
236 		 "\t\t\tDefault: Yes");
237 MODULE_PARM_DESC(ivtv_yuv_mode,
238 		 "Specify the yuv playback mode:\n"
239 		 "\t\t\t0 = interlaced\n\t\t\t1 = progressive\n\t\t\t2 = auto\n"
240 		 "\t\t\tDefault: 0 (interlaced)");
241 MODULE_PARM_DESC(ivtv_yuv_threshold,
242 		 "If ivtv_yuv_mode is 2 (auto) then playback content as\n\t\tprogressive if src height <= ivtv_yuvthreshold\n"
243 		 "\t\t\tDefault: 480");
244 MODULE_PARM_DESC(enc_mpg_buffers,
245 		 "Encoder MPG Buffers (in MB)\n"
246 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_MPG_BUFFERS));
247 MODULE_PARM_DESC(enc_yuv_buffers,
248 		 "Encoder YUV Buffers (in MB)\n"
249 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_YUV_BUFFERS));
250 MODULE_PARM_DESC(enc_vbi_buffers,
251 		 "Encoder VBI Buffers (in MB)\n"
252 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_VBI_BUFFERS));
253 MODULE_PARM_DESC(enc_pcm_buffers,
254 		 "Encoder PCM buffers (in kB)\n"
255 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_PCM_BUFFERS));
256 MODULE_PARM_DESC(dec_mpg_buffers,
257 		 "Decoder MPG buffers (in MB)\n"
258 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_DEC_MPG_BUFFERS));
259 MODULE_PARM_DESC(dec_yuv_buffers,
260 		 "Decoder YUV buffers (in MB)\n"
261 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_DEC_YUV_BUFFERS));
262 MODULE_PARM_DESC(dec_vbi_buffers,
263 		 "Decoder VBI buffers (in kB)\n"
264 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_DEC_VBI_BUFFERS));
265 MODULE_PARM_DESC(newi2c,
266 		 "Use new I2C implementation\n"
267 		 "\t\t\t-1 is autodetect, 0 is off, 1 is on\n"
268 		 "\t\t\tDefault is autodetect");
269 MODULE_PARM_DESC(i2c_clock_period,
270 		 "Period of SCL for the I2C bus controlled by the CX23415/6\n"
271 		 "\t\t\tMin: 10 usec (100 kHz), Max: 4500 usec (222 Hz)\n"
272 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_I2C_CLOCK_PERIOD));
273 
274 MODULE_PARM_DESC(ivtv_first_minor, "Set device node number assigned to first card");
275 
276 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil");
277 MODULE_DESCRIPTION("CX23415/CX23416 driver");
278 MODULE_SUPPORTED_DEVICE
279     ("CX23415/CX23416 MPEG2 encoder (WinTV PVR-150/250/350/500,\n"
280 		"\t\t\tYuan MPG series and similar)");
281 MODULE_LICENSE("GPL");
282 
283 MODULE_VERSION(IVTV_VERSION);
284 
285 #if defined(CONFIG_MODULES) && defined(MODULE)
286 static void request_module_async(struct work_struct *work)
287 {
288 	struct ivtv *dev = container_of(work, struct ivtv, request_module_wk);
289 
290 	/* Make sure ivtv-alsa module is loaded */
291 	request_module("ivtv-alsa");
292 
293 	/* Initialize ivtv-alsa for this instance of the cx18 device */
294 	if (ivtv_ext_init != NULL)
295 		ivtv_ext_init(dev);
296 }
297 
298 static void request_modules(struct ivtv *dev)
299 {
300 	INIT_WORK(&dev->request_module_wk, request_module_async);
301 	schedule_work(&dev->request_module_wk);
302 }
303 
304 static void flush_request_modules(struct ivtv *dev)
305 {
306 	flush_work(&dev->request_module_wk);
307 }
308 #else
309 #define request_modules(dev)
310 #define flush_request_modules(dev)
311 #endif /* CONFIG_MODULES */
312 
313 void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask)
314 {
315 	itv->irqmask &= ~mask;
316 	write_reg_sync(itv->irqmask, IVTV_REG_IRQMASK);
317 }
318 
319 void ivtv_set_irq_mask(struct ivtv *itv, u32 mask)
320 {
321 	itv->irqmask |= mask;
322 	write_reg_sync(itv->irqmask, IVTV_REG_IRQMASK);
323 }
324 
325 int ivtv_set_output_mode(struct ivtv *itv, int mode)
326 {
327     int old_mode;
328 
329     spin_lock(&itv->lock);
330     old_mode = itv->output_mode;
331     if (old_mode == 0)
332 	itv->output_mode = old_mode = mode;
333     spin_unlock(&itv->lock);
334     return old_mode;
335 }
336 
337 struct ivtv_stream *ivtv_get_output_stream(struct ivtv *itv)
338 {
339 	switch (itv->output_mode) {
340 	case OUT_MPG:
341 		return &itv->streams[IVTV_DEC_STREAM_TYPE_MPG];
342 	case OUT_YUV:
343 		return &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
344 	default:
345 		return NULL;
346 	}
347 }
348 
349 int ivtv_waitq(wait_queue_head_t *waitq)
350 {
351 	DEFINE_WAIT(wait);
352 
353 	prepare_to_wait(waitq, &wait, TASK_INTERRUPTIBLE);
354 	schedule();
355 	finish_wait(waitq, &wait);
356 	return signal_pending(current) ? -EINTR : 0;
357 }
358 
359 /* Generic utility functions */
360 int ivtv_msleep_timeout(unsigned int msecs, int intr)
361 {
362 	int timeout = msecs_to_jiffies(msecs);
363 
364 	do {
365 		set_current_state(intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
366 		timeout = schedule_timeout(timeout);
367 		if (intr) {
368 			int ret = signal_pending(current);
369 
370 			if (ret)
371 				return ret;
372 		}
373 	} while (timeout);
374 	return 0;
375 }
376 
377 /* Release ioremapped memory */
378 static void ivtv_iounmap(struct ivtv *itv)
379 {
380 	if (itv == NULL)
381 		return;
382 
383 	/* Release registers memory */
384 	if (itv->reg_mem != NULL) {
385 		IVTV_DEBUG_INFO("releasing reg_mem\n");
386 		iounmap(itv->reg_mem);
387 		itv->reg_mem = NULL;
388 	}
389 	/* Release io memory */
390 	if (itv->has_cx23415 && itv->dec_mem != NULL) {
391 		IVTV_DEBUG_INFO("releasing dec_mem\n");
392 		iounmap(itv->dec_mem);
393 	}
394 	itv->dec_mem = NULL;
395 
396 	/* Release io memory */
397 	if (itv->enc_mem != NULL) {
398 		IVTV_DEBUG_INFO("releasing enc_mem\n");
399 		iounmap(itv->enc_mem);
400 		itv->enc_mem = NULL;
401 	}
402 }
403 
404 /* Hauppauge card? get values from tveeprom */
405 void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv)
406 {
407 	u8 eedata[256];
408 
409 	itv->i2c_client.addr = 0xA0 >> 1;
410 	tveeprom_read(&itv->i2c_client, eedata, sizeof(eedata));
411 	tveeprom_hauppauge_analog(tv, eedata);
412 }
413 
414 static void ivtv_process_eeprom(struct ivtv *itv)
415 {
416 	struct tveeprom tv;
417 	int pci_slot = PCI_SLOT(itv->pdev->devfn);
418 
419 	ivtv_read_eeprom(itv, &tv);
420 
421 	/* Many thanks to Steven Toth from Hauppauge for providing the
422 	   model numbers */
423 	switch (tv.model) {
424 		/* In a few cases the PCI subsystem IDs do not correctly
425 		   identify the card. A better method is to check the
426 		   model number from the eeprom instead. */
427 		case 30012 ... 30039:  /* Low profile PVR250 */
428 		case 32000 ... 32999:
429 		case 48000 ... 48099:  /* 48??? range are PVR250s with a cx23415 */
430 		case 48400 ... 48599:
431 			itv->card = ivtv_get_card(IVTV_CARD_PVR_250);
432 			break;
433 		case 48100 ... 48399:
434 		case 48600 ... 48999:
435 			itv->card = ivtv_get_card(IVTV_CARD_PVR_350);
436 			break;
437 		case 23000 ... 23999:  /* PVR500 */
438 		case 25000 ... 25999:  /* Low profile PVR150 */
439 		case 26000 ... 26999:  /* Regular PVR150 */
440 			itv->card = ivtv_get_card(IVTV_CARD_PVR_150);
441 			break;
442 		case 0:
443 			IVTV_ERR("Invalid EEPROM\n");
444 			return;
445 		default:
446 			IVTV_ERR("Unknown model %d, defaulting to PVR-150\n", tv.model);
447 			itv->card = ivtv_get_card(IVTV_CARD_PVR_150);
448 			break;
449 	}
450 
451 	switch (tv.model) {
452 		/* Old style PVR350 (with an saa7114) uses this input for
453 		   the tuner. */
454 		case 48254:
455 			itv->card = ivtv_get_card(IVTV_CARD_PVR_350_V1);
456 			break;
457 		default:
458 			break;
459 	}
460 
461 	itv->v4l2_cap = itv->card->v4l2_capabilities;
462 	itv->card_name = itv->card->name;
463 	itv->card_i2c = itv->card->i2c;
464 
465 	/* If this is a PVR500 then it should be possible to detect whether it is the
466 	   first or second unit by looking at the subsystem device ID: is bit 4 is
467 	   set, then it is the second unit (according to info from Hauppauge).
468 
469 	   However, while this works for most cards, I have seen a few PVR500 cards
470 	   where both units have the same subsystem ID.
471 
472 	   So instead I look at the reported 'PCI slot' (which is the slot on the PVR500
473 	   PCI bridge) and if it is 8, then it is assumed to be the first unit, otherwise
474 	   it is the second unit. It is possible that it is a different slot when ivtv is
475 	   used in Xen, in that case I ignore this card here. The worst that can happen
476 	   is that the card presents itself with a non-working radio device.
477 
478 	   This detection is needed since the eeprom reports incorrectly that a radio is
479 	   present on the second unit. */
480 	if (tv.model / 1000 == 23) {
481 		static const struct ivtv_card_tuner_i2c ivtv_i2c_radio = {
482 			.radio = { 0x60, I2C_CLIENT_END },
483 			.demod = { 0x43, I2C_CLIENT_END },
484 			.tv = { 0x61, I2C_CLIENT_END },
485 		};
486 
487 		itv->card_name = "WinTV PVR 500";
488 		itv->card_i2c = &ivtv_i2c_radio;
489 		if (pci_slot == 8 || pci_slot == 9) {
490 			int is_first = (pci_slot & 1) == 0;
491 
492 			itv->card_name = is_first ? "WinTV PVR 500 (unit #1)" :
493 						    "WinTV PVR 500 (unit #2)";
494 			if (!is_first) {
495 				IVTV_INFO("Correcting tveeprom data: no radio present on second unit\n");
496 				tv.has_radio = 0;
497 			}
498 		}
499 	}
500 	IVTV_INFO("Autodetected %s\n", itv->card_name);
501 
502 	switch (tv.tuner_hauppauge_model) {
503 		case 85:
504 		case 99:
505 		case 112:
506 			itv->pvr150_workaround = 1;
507 			break;
508 		default:
509 			break;
510 	}
511 	if (tv.tuner_type == TUNER_ABSENT)
512 		IVTV_ERR("tveeprom cannot autodetect tuner!\n");
513 
514 	if (itv->options.tuner == -1)
515 		itv->options.tuner = tv.tuner_type;
516 	if (itv->options.radio == -1)
517 		itv->options.radio = (tv.has_radio != 0);
518 	/* only enable newi2c if an IR blaster is present */
519 	if (itv->options.newi2c == -1 && tv.has_ir) {
520 		itv->options.newi2c = (tv.has_ir & 4) ? 1 : 0;
521 		if (itv->options.newi2c) {
522 		    IVTV_INFO("Reopen i2c bus for IR-blaster support\n");
523 		    exit_ivtv_i2c(itv);
524 		    init_ivtv_i2c(itv);
525 		}
526 	}
527 
528 	if (itv->std != 0)
529 		/* user specified tuner standard */
530 		return;
531 
532 	/* autodetect tuner standard */
533 	if (tv.tuner_formats & V4L2_STD_PAL) {
534 		IVTV_DEBUG_INFO("PAL tuner detected\n");
535 		itv->std |= V4L2_STD_PAL_BG | V4L2_STD_PAL_H;
536 	} else if (tv.tuner_formats & V4L2_STD_NTSC) {
537 		IVTV_DEBUG_INFO("NTSC tuner detected\n");
538 		itv->std |= V4L2_STD_NTSC_M;
539 	} else if (tv.tuner_formats & V4L2_STD_SECAM) {
540 		IVTV_DEBUG_INFO("SECAM tuner detected\n");
541 		itv->std |= V4L2_STD_SECAM_L;
542 	} else {
543 		IVTV_INFO("No tuner detected, default to NTSC-M\n");
544 		itv->std |= V4L2_STD_NTSC_M;
545 	}
546 }
547 
548 static v4l2_std_id ivtv_parse_std(struct ivtv *itv)
549 {
550 	switch (pal[0]) {
551 		case '6':
552 			tunertype = 0;
553 			return V4L2_STD_PAL_60;
554 		case 'b':
555 		case 'B':
556 		case 'g':
557 		case 'G':
558 		case 'h':
559 		case 'H':
560 			tunertype = 0;
561 			return V4L2_STD_PAL_BG | V4L2_STD_PAL_H;
562 		case 'n':
563 		case 'N':
564 			tunertype = 1;
565 			if (pal[1] == 'c' || pal[1] == 'C')
566 				return V4L2_STD_PAL_Nc;
567 			return V4L2_STD_PAL_N;
568 		case 'i':
569 		case 'I':
570 			tunertype = 0;
571 			return V4L2_STD_PAL_I;
572 		case 'd':
573 		case 'D':
574 		case 'k':
575 		case 'K':
576 			tunertype = 0;
577 			return V4L2_STD_PAL_DK;
578 		case 'M':
579 		case 'm':
580 			tunertype = 1;
581 			return V4L2_STD_PAL_M;
582 		case '-':
583 			break;
584 		default:
585 			IVTV_WARN("pal= argument not recognised\n");
586 			return 0;
587 	}
588 
589 	switch (secam[0]) {
590 		case 'b':
591 		case 'B':
592 		case 'g':
593 		case 'G':
594 		case 'h':
595 		case 'H':
596 			tunertype = 0;
597 			return V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
598 		case 'd':
599 		case 'D':
600 		case 'k':
601 		case 'K':
602 			tunertype = 0;
603 			return V4L2_STD_SECAM_DK;
604 		case 'l':
605 		case 'L':
606 			tunertype = 0;
607 			if (secam[1] == 'C' || secam[1] == 'c')
608 				return V4L2_STD_SECAM_LC;
609 			return V4L2_STD_SECAM_L;
610 		case '-':
611 			break;
612 		default:
613 			IVTV_WARN("secam= argument not recognised\n");
614 			return 0;
615 	}
616 
617 	switch (ntsc[0]) {
618 		case 'm':
619 		case 'M':
620 			tunertype = 1;
621 			return V4L2_STD_NTSC_M;
622 		case 'j':
623 		case 'J':
624 			tunertype = 1;
625 			return V4L2_STD_NTSC_M_JP;
626 		case 'k':
627 		case 'K':
628 			tunertype = 1;
629 			return V4L2_STD_NTSC_M_KR;
630 		case '-':
631 			break;
632 		default:
633 			IVTV_WARN("ntsc= argument not recognised\n");
634 			return 0;
635 	}
636 
637 	/* no match found */
638 	return 0;
639 }
640 
641 static void ivtv_process_options(struct ivtv *itv)
642 {
643 	const char *chipname;
644 	int i, j;
645 
646 	itv->options.kilobytes[IVTV_ENC_STREAM_TYPE_MPG] = enc_mpg_buffers * 1024;
647 	itv->options.kilobytes[IVTV_ENC_STREAM_TYPE_YUV] = enc_yuv_buffers * 1024;
648 	itv->options.kilobytes[IVTV_ENC_STREAM_TYPE_VBI] = enc_vbi_buffers * 1024;
649 	itv->options.kilobytes[IVTV_ENC_STREAM_TYPE_PCM] = enc_pcm_buffers;
650 	itv->options.kilobytes[IVTV_DEC_STREAM_TYPE_MPG] = dec_mpg_buffers * 1024;
651 	itv->options.kilobytes[IVTV_DEC_STREAM_TYPE_YUV] = dec_yuv_buffers * 1024;
652 	itv->options.kilobytes[IVTV_DEC_STREAM_TYPE_VBI] = dec_vbi_buffers;
653 	itv->options.cardtype = cardtype[itv->instance];
654 	itv->options.tuner = tuner[itv->instance];
655 	itv->options.radio = radio[itv->instance];
656 
657 	itv->options.i2c_clock_period = i2c_clock_period[itv->instance];
658 	if (itv->options.i2c_clock_period == -1)
659 		itv->options.i2c_clock_period = IVTV_DEFAULT_I2C_CLOCK_PERIOD;
660 	else if (itv->options.i2c_clock_period < 10)
661 		itv->options.i2c_clock_period = 10;
662 	else if (itv->options.i2c_clock_period > 4500)
663 		itv->options.i2c_clock_period = 4500;
664 
665 	itv->options.newi2c = newi2c;
666 	if (tunertype < -1 || tunertype > 1) {
667 		IVTV_WARN("Invalid tunertype argument, will autodetect instead\n");
668 		tunertype = -1;
669 	}
670 	itv->std = ivtv_parse_std(itv);
671 	if (itv->std == 0 && tunertype >= 0)
672 		itv->std = tunertype ? V4L2_STD_MN : (V4L2_STD_ALL & ~V4L2_STD_MN);
673 	itv->has_cx23415 = (itv->pdev->device == PCI_DEVICE_ID_IVTV15);
674 	chipname = itv->has_cx23415 ? "cx23415" : "cx23416";
675 	if (itv->options.cardtype == -1) {
676 		IVTV_INFO("Ignore card (detected %s based chip)\n", chipname);
677 		return;
678 	}
679 	if ((itv->card = ivtv_get_card(itv->options.cardtype - 1))) {
680 		IVTV_INFO("User specified %s card (detected %s based chip)\n",
681 				itv->card->name, chipname);
682 	} else if (itv->options.cardtype != 0) {
683 		IVTV_ERR("Unknown user specified type, trying to autodetect card\n");
684 	}
685 	if (itv->card == NULL) {
686 		if (itv->pdev->subsystem_vendor == IVTV_PCI_ID_HAUPPAUGE ||
687 		    itv->pdev->subsystem_vendor == IVTV_PCI_ID_HAUPPAUGE_ALT1 ||
688 		    itv->pdev->subsystem_vendor == IVTV_PCI_ID_HAUPPAUGE_ALT2) {
689 			itv->card = ivtv_get_card(itv->has_cx23415 ? IVTV_CARD_PVR_350 : IVTV_CARD_PVR_150);
690 			IVTV_INFO("Autodetected Hauppauge card (%s based)\n",
691 					chipname);
692 		}
693 	}
694 	if (itv->card == NULL) {
695 		for (i = 0; (itv->card = ivtv_get_card(i)); i++) {
696 			if (itv->card->pci_list == NULL)
697 				continue;
698 			for (j = 0; itv->card->pci_list[j].device; j++) {
699 				if (itv->pdev->device !=
700 				    itv->card->pci_list[j].device)
701 					continue;
702 				if (itv->pdev->subsystem_vendor !=
703 				    itv->card->pci_list[j].subsystem_vendor)
704 					continue;
705 				if (itv->pdev->subsystem_device !=
706 				    itv->card->pci_list[j].subsystem_device)
707 					continue;
708 				IVTV_INFO("Autodetected %s card (%s based)\n",
709 						itv->card->name, chipname);
710 				goto done;
711 			}
712 		}
713 	}
714 done:
715 
716 	if (itv->card == NULL) {
717 		itv->card = ivtv_get_card(IVTV_CARD_PVR_150);
718 		IVTV_ERR("Unknown card: vendor/device: [%04x:%04x]\n",
719 		     itv->pdev->vendor, itv->pdev->device);
720 		IVTV_ERR("              subsystem vendor/device: [%04x:%04x]\n",
721 		     itv->pdev->subsystem_vendor, itv->pdev->subsystem_device);
722 		IVTV_ERR("              %s based\n", chipname);
723 		IVTV_ERR("Defaulting to %s card\n", itv->card->name);
724 		IVTV_ERR("Please mail the vendor/device and subsystem vendor/device IDs and what kind of\n");
725 		IVTV_ERR("card you have to the linux-media mailinglist (www.linuxtv.org)\n");
726 		IVTV_ERR("Prefix your subject line with [UNKNOWN IVTV CARD].\n");
727 	}
728 	itv->v4l2_cap = itv->card->v4l2_capabilities;
729 	itv->card_name = itv->card->name;
730 	itv->card_i2c = itv->card->i2c;
731 }
732 
733 /* Precondition: the ivtv structure has been memset to 0. Only
734    the dev and num fields have been filled in.
735    No assumptions on the card type may be made here (see ivtv_init_struct2
736    for that).
737  */
738 static int ivtv_init_struct1(struct ivtv *itv)
739 {
740 	itv->base_addr = pci_resource_start(itv->pdev, 0);
741 	itv->enc_mbox.max_mbox = 2; /* the encoder has 3 mailboxes (0-2) */
742 	itv->dec_mbox.max_mbox = 1; /* the decoder has 2 mailboxes (0-1) */
743 
744 	mutex_init(&itv->serialize_lock);
745 	mutex_init(&itv->i2c_bus_lock);
746 	mutex_init(&itv->udma.lock);
747 
748 	spin_lock_init(&itv->lock);
749 	spin_lock_init(&itv->dma_reg_lock);
750 
751 	kthread_init_worker(&itv->irq_worker);
752 	itv->irq_worker_task = kthread_run(kthread_worker_fn, &itv->irq_worker,
753 					   "%s", itv->v4l2_dev.name);
754 	if (IS_ERR(itv->irq_worker_task)) {
755 		IVTV_ERR("Could not create ivtv task\n");
756 		return -1;
757 	}
758 	/* must use the FIFO scheduler as it is realtime sensitive */
759 	sched_set_fifo(itv->irq_worker_task);
760 
761 	kthread_init_work(&itv->irq_work, ivtv_irq_work_handler);
762 
763 	/* Initial settings */
764 	itv->cxhdl.port = CX2341X_PORT_MEMORY;
765 	itv->cxhdl.capabilities = CX2341X_CAP_HAS_SLICED_VBI;
766 	init_waitqueue_head(&itv->eos_waitq);
767 	init_waitqueue_head(&itv->event_waitq);
768 	init_waitqueue_head(&itv->vsync_waitq);
769 	init_waitqueue_head(&itv->dma_waitq);
770 	timer_setup(&itv->dma_timer, ivtv_unfinished_dma, 0);
771 
772 	itv->cur_dma_stream = -1;
773 	itv->cur_pio_stream = -1;
774 
775 	/* Ctrls */
776 	itv->speed = 1000;
777 
778 	/* VBI */
779 	itv->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;
780 	itv->vbi.sliced_in = &itv->vbi.in.fmt.sliced;
781 
782 	/* Init the sg table for osd/yuv output */
783 	sg_init_table(itv->udma.SGlist, IVTV_DMA_SG_OSD_ENT);
784 
785 	/* OSD */
786 	itv->osd_global_alpha_state = 1;
787 	itv->osd_global_alpha = 255;
788 
789 	/* YUV */
790 	atomic_set(&itv->yuv_info.next_dma_frame, -1);
791 	itv->yuv_info.lace_mode = ivtv_yuv_mode;
792 	itv->yuv_info.lace_threshold = ivtv_yuv_threshold;
793 	itv->yuv_info.max_frames_buffered = 3;
794 	itv->yuv_info.track_osd = 1;
795 	return 0;
796 }
797 
798 /* Second initialization part. Here the card type has been
799    autodetected. */
800 static void ivtv_init_struct2(struct ivtv *itv)
801 {
802 	int i;
803 
804 	for (i = 0; i < IVTV_CARD_MAX_VIDEO_INPUTS; i++)
805 		if (itv->card->video_inputs[i].video_type == 0)
806 			break;
807 	itv->nof_inputs = i;
808 	for (i = 0; i < IVTV_CARD_MAX_AUDIO_INPUTS; i++)
809 		if (itv->card->audio_inputs[i].audio_type == 0)
810 			break;
811 	itv->nof_audio_inputs = i;
812 
813 	if (itv->card->hw_all & IVTV_HW_CX25840) {
814 		itv->vbi.sliced_size = 288;  /* multiple of 16, real size = 284 */
815 	} else {
816 		itv->vbi.sliced_size = 64;   /* multiple of 16, real size = 52 */
817 	}
818 
819 	/* Find tuner input */
820 	for (i = 0; i < itv->nof_inputs; i++) {
821 		if (itv->card->video_inputs[i].video_type ==
822 				IVTV_CARD_INPUT_VID_TUNER)
823 			break;
824 	}
825 	if (i >= itv->nof_inputs)
826 		i = 0;
827 	itv->active_input = i;
828 	itv->audio_input = itv->card->video_inputs[i].audio_index;
829 }
830 
831 static int ivtv_setup_pci(struct ivtv *itv, struct pci_dev *pdev,
832 			  const struct pci_device_id *pci_id)
833 {
834 	u16 cmd;
835 	unsigned char pci_latency;
836 
837 	IVTV_DEBUG_INFO("Enabling pci device\n");
838 
839 	if (pci_enable_device(pdev)) {
840 		IVTV_ERR("Can't enable device!\n");
841 		return -EIO;
842 	}
843 	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
844 		IVTV_ERR("No suitable DMA available.\n");
845 		return -EIO;
846 	}
847 	if (!request_mem_region(itv->base_addr, IVTV_ENCODER_SIZE, "ivtv encoder")) {
848 		IVTV_ERR("Cannot request encoder memory region.\n");
849 		return -EIO;
850 	}
851 
852 	if (!request_mem_region(itv->base_addr + IVTV_REG_OFFSET,
853 				IVTV_REG_SIZE, "ivtv registers")) {
854 		IVTV_ERR("Cannot request register memory region.\n");
855 		release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
856 		return -EIO;
857 	}
858 
859 	if (itv->has_cx23415 &&
860 	    !request_mem_region(itv->base_addr + IVTV_DECODER_OFFSET,
861 				IVTV_DECODER_SIZE, "ivtv decoder")) {
862 		IVTV_ERR("Cannot request decoder memory region.\n");
863 		release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
864 		release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
865 		return -EIO;
866 	}
867 
868 	/* Check for bus mastering */
869 	pci_read_config_word(pdev, PCI_COMMAND, &cmd);
870 	if (!(cmd & PCI_COMMAND_MASTER)) {
871 		IVTV_DEBUG_INFO("Attempting to enable Bus Mastering\n");
872 		pci_set_master(pdev);
873 		pci_read_config_word(pdev, PCI_COMMAND, &cmd);
874 		if (!(cmd & PCI_COMMAND_MASTER)) {
875 			IVTV_ERR("Bus Mastering is not enabled\n");
876 			return -ENXIO;
877 		}
878 	}
879 	IVTV_DEBUG_INFO("Bus Mastering Enabled.\n");
880 
881 	pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
882 
883 	if (pci_latency < 64 && ivtv_pci_latency) {
884 		IVTV_INFO("Unreasonably low latency timer, setting to 64 (was %d)\n",
885 			  pci_latency);
886 		pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 64);
887 		pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
888 	}
889 	/* This config space value relates to DMA latencies. The
890 	   default value 0x8080 is too low however and will lead
891 	   to DMA errors. 0xffff is the max value which solves
892 	   these problems. */
893 	pci_write_config_dword(pdev, 0x40, 0xffff);
894 
895 	IVTV_DEBUG_INFO("%d (rev %d) at %02x:%02x.%x, irq: %d, latency: %d, memory: 0x%llx\n",
896 		   pdev->device, pdev->revision, pdev->bus->number,
897 		   PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
898 		   pdev->irq, pci_latency, (u64)itv->base_addr);
899 
900 	return 0;
901 }
902 
903 static void ivtv_load_and_init_modules(struct ivtv *itv)
904 {
905 	u32 hw = itv->card->hw_all;
906 	unsigned i;
907 
908 	/* check which i2c devices are actually found */
909 	for (i = 0; i < 32; i++) {
910 		u32 device = BIT(i);
911 
912 		if (!(device & hw))
913 			continue;
914 		if (device == IVTV_HW_GPIO || device == IVTV_HW_TVEEPROM) {
915 			/* GPIO and TVEEPROM do not use i2c probing */
916 			itv->hw_flags |= device;
917 			continue;
918 		}
919 		if (ivtv_i2c_register(itv, i) == 0)
920 			itv->hw_flags |= device;
921 	}
922 
923 	/* probe for legacy IR controllers that aren't in card definitions */
924 	if ((itv->hw_flags & IVTV_HW_IR_ANY) == 0)
925 		ivtv_i2c_new_ir_legacy(itv);
926 
927 	if (itv->card->hw_all & IVTV_HW_CX25840)
928 		itv->sd_video = ivtv_find_hw(itv, IVTV_HW_CX25840);
929 	else if (itv->card->hw_all & IVTV_HW_SAA717X)
930 		itv->sd_video = ivtv_find_hw(itv, IVTV_HW_SAA717X);
931 	else if (itv->card->hw_all & IVTV_HW_SAA7114)
932 		itv->sd_video = ivtv_find_hw(itv, IVTV_HW_SAA7114);
933 	else
934 		itv->sd_video = ivtv_find_hw(itv, IVTV_HW_SAA7115);
935 	itv->sd_audio = ivtv_find_hw(itv, itv->card->hw_audio_ctrl);
936 	itv->sd_muxer = ivtv_find_hw(itv, itv->card->hw_muxer);
937 
938 	hw = itv->hw_flags;
939 
940 	if (itv->card->type == IVTV_CARD_CX23416GYC) {
941 		/* Several variations of this card exist, detect which card
942 		   type should be used. */
943 		if ((hw & (IVTV_HW_UPD64031A | IVTV_HW_UPD6408X)) == 0)
944 			itv->card = ivtv_get_card(IVTV_CARD_CX23416GYC_NOGRYCS);
945 		else if ((hw & IVTV_HW_UPD64031A) == 0)
946 			itv->card = ivtv_get_card(IVTV_CARD_CX23416GYC_NOGR);
947 	}
948 	else if (itv->card->type == IVTV_CARD_GV_MVPRX ||
949 		 itv->card->type == IVTV_CARD_GV_MVPRX2E) {
950 		/* The crystal frequency of GVMVPRX is 24.576MHz */
951 		v4l2_subdev_call(itv->sd_video, video, s_crystal_freq,
952 			SAA7115_FREQ_24_576_MHZ, SAA7115_FREQ_FL_UCGC);
953 	}
954 
955 	if (hw & IVTV_HW_CX25840) {
956 		itv->vbi.raw_decoder_line_size = 1444;
957 		itv->vbi.raw_decoder_sav_odd_field = 0x20;
958 		itv->vbi.raw_decoder_sav_even_field = 0x60;
959 		itv->vbi.sliced_decoder_line_size = 272;
960 		itv->vbi.sliced_decoder_sav_odd_field = 0xB0;
961 		itv->vbi.sliced_decoder_sav_even_field = 0xF0;
962 	}
963 
964 	if (hw & IVTV_HW_SAA711X) {
965 		/* determine the exact saa711x model */
966 		itv->hw_flags &= ~IVTV_HW_SAA711X;
967 
968 		if (strstr(itv->sd_video->name, "saa7114")) {
969 			itv->hw_flags |= IVTV_HW_SAA7114;
970 			/* VBI is not yet supported by the saa7114 driver. */
971 			itv->v4l2_cap &= ~(V4L2_CAP_SLICED_VBI_CAPTURE|V4L2_CAP_VBI_CAPTURE);
972 		} else {
973 			itv->hw_flags |= IVTV_HW_SAA7115;
974 		}
975 		itv->vbi.raw_decoder_line_size = 1443;
976 		itv->vbi.raw_decoder_sav_odd_field = 0x25;
977 		itv->vbi.raw_decoder_sav_even_field = 0x62;
978 		itv->vbi.sliced_decoder_line_size = 51;
979 		itv->vbi.sliced_decoder_sav_odd_field = 0xAB;
980 		itv->vbi.sliced_decoder_sav_even_field = 0xEC;
981 	}
982 
983 	if (hw & IVTV_HW_SAA717X) {
984 		itv->vbi.raw_decoder_line_size = 1443;
985 		itv->vbi.raw_decoder_sav_odd_field = 0x25;
986 		itv->vbi.raw_decoder_sav_even_field = 0x62;
987 		itv->vbi.sliced_decoder_line_size = 51;
988 		itv->vbi.sliced_decoder_sav_odd_field = 0xAB;
989 		itv->vbi.sliced_decoder_sav_even_field = 0xEC;
990 	}
991 }
992 
993 static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
994 {
995 	int retval = 0;
996 	int vbi_buf_size;
997 	struct ivtv *itv;
998 
999 	itv = kzalloc(sizeof(struct ivtv), GFP_KERNEL);
1000 	if (itv == NULL)
1001 		return -ENOMEM;
1002 	itv->pdev = pdev;
1003 	itv->instance = v4l2_device_set_name(&itv->v4l2_dev, "ivtv",
1004 						&ivtv_instance);
1005 
1006 	retval = v4l2_device_register(&pdev->dev, &itv->v4l2_dev);
1007 	if (retval) {
1008 		kfree(itv);
1009 		return retval;
1010 	}
1011 	IVTV_INFO("Initializing card %d\n", itv->instance);
1012 
1013 	ivtv_process_options(itv);
1014 	if (itv->options.cardtype == -1) {
1015 		retval = -ENODEV;
1016 		goto err;
1017 	}
1018 	if (ivtv_init_struct1(itv)) {
1019 		retval = -ENOMEM;
1020 		goto err;
1021 	}
1022 	retval = cx2341x_handler_init(&itv->cxhdl, 50);
1023 	if (retval)
1024 		goto err;
1025 	itv->v4l2_dev.ctrl_handler = &itv->cxhdl.hdl;
1026 	itv->cxhdl.ops = &ivtv_cxhdl_ops;
1027 	itv->cxhdl.priv = itv;
1028 	itv->cxhdl.func = ivtv_api_func;
1029 
1030 	IVTV_DEBUG_INFO("base addr: 0x%llx\n", (u64)itv->base_addr);
1031 
1032 	/* PCI Device Setup */
1033 	retval = ivtv_setup_pci(itv, pdev, pci_id);
1034 	if (retval == -EIO)
1035 		goto free_worker;
1036 	if (retval == -ENXIO)
1037 		goto free_mem;
1038 
1039 	/* map io memory */
1040 	IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
1041 		   (u64)itv->base_addr + IVTV_ENCODER_OFFSET, IVTV_ENCODER_SIZE);
1042 	itv->enc_mem = ioremap(itv->base_addr + IVTV_ENCODER_OFFSET,
1043 				       IVTV_ENCODER_SIZE);
1044 	if (!itv->enc_mem) {
1045 		IVTV_ERR("ioremap failed. Can't get a window into CX23415/6 encoder memory\n");
1046 		IVTV_ERR("Each capture card with a CX23415/6 needs 8 MB of vmalloc address space for this window\n");
1047 		IVTV_ERR("Check the output of 'grep Vmalloc /proc/meminfo'\n");
1048 		IVTV_ERR("Use the vmalloc= kernel command line option to set VmallocTotal to a larger value\n");
1049 		retval = -ENOMEM;
1050 		goto free_mem;
1051 	}
1052 
1053 	if (itv->has_cx23415) {
1054 		IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
1055 				(u64)itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
1056 		itv->dec_mem = ioremap(itv->base_addr + IVTV_DECODER_OFFSET,
1057 				IVTV_DECODER_SIZE);
1058 		if (!itv->dec_mem) {
1059 			IVTV_ERR("ioremap failed. Can't get a window into CX23415 decoder memory\n");
1060 			IVTV_ERR("Each capture card with a CX23415 needs 8 MB of vmalloc address space for this window\n");
1061 			IVTV_ERR("Check the output of 'grep Vmalloc /proc/meminfo'\n");
1062 			IVTV_ERR("Use the vmalloc= kernel command line option to set VmallocTotal to a larger value\n");
1063 			retval = -ENOMEM;
1064 			goto free_mem;
1065 		}
1066 	}
1067 	else {
1068 		itv->dec_mem = itv->enc_mem;
1069 	}
1070 
1071 	/* map registers memory */
1072 	IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
1073 		   (u64)itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
1074 	itv->reg_mem =
1075 	    ioremap(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
1076 	if (!itv->reg_mem) {
1077 		IVTV_ERR("ioremap failed. Can't get a window into CX23415/6 register space\n");
1078 		IVTV_ERR("Each capture card with a CX23415/6 needs 64 kB of vmalloc address space for this window\n");
1079 		IVTV_ERR("Check the output of 'grep Vmalloc /proc/meminfo'\n");
1080 		IVTV_ERR("Use the vmalloc= kernel command line option to set VmallocTotal to a larger value\n");
1081 		retval = -ENOMEM;
1082 		goto free_io;
1083 	}
1084 
1085 	retval = ivtv_gpio_init(itv);
1086 	if (retval)
1087 		goto free_io;
1088 
1089 	/* active i2c  */
1090 	IVTV_DEBUG_INFO("activating i2c...\n");
1091 	if (init_ivtv_i2c(itv)) {
1092 		IVTV_ERR("Could not initialize i2c\n");
1093 		goto free_io;
1094 	}
1095 
1096 	if (itv->card->hw_all & IVTV_HW_TVEEPROM) {
1097 		/* Based on the model number the cardtype may be changed.
1098 		   The PCI IDs are not always reliable. */
1099 		ivtv_process_eeprom(itv);
1100 	}
1101 	if (itv->card->comment)
1102 		IVTV_INFO("%s", itv->card->comment);
1103 	if (itv->card->v4l2_capabilities == 0) {
1104 		/* card was detected but is not supported */
1105 		retval = -ENODEV;
1106 		goto free_i2c;
1107 	}
1108 
1109 	if (itv->std == 0) {
1110 		itv->std = V4L2_STD_NTSC_M;
1111 	}
1112 
1113 	if (itv->options.tuner == -1) {
1114 		int i;
1115 
1116 		for (i = 0; i < IVTV_CARD_MAX_TUNERS; i++) {
1117 			if ((itv->std & itv->card->tuners[i].std) == 0)
1118 				continue;
1119 			itv->options.tuner = itv->card->tuners[i].tuner;
1120 			break;
1121 		}
1122 	}
1123 	/* if no tuner was found, then pick the first tuner in the card list */
1124 	if (itv->options.tuner == -1 && itv->card->tuners[0].std) {
1125 		itv->std = itv->card->tuners[0].std;
1126 		if (itv->std & V4L2_STD_PAL)
1127 			itv->std = V4L2_STD_PAL_BG | V4L2_STD_PAL_H;
1128 		else if (itv->std & V4L2_STD_NTSC)
1129 			itv->std = V4L2_STD_NTSC_M;
1130 		else if (itv->std & V4L2_STD_SECAM)
1131 			itv->std = V4L2_STD_SECAM_L;
1132 		itv->options.tuner = itv->card->tuners[0].tuner;
1133 	}
1134 	if (itv->options.radio == -1)
1135 		itv->options.radio = (itv->card->radio_input.audio_type != 0);
1136 
1137 	/* The card is now fully identified, continue with card-specific
1138 	   initialization. */
1139 	ivtv_init_struct2(itv);
1140 
1141 	ivtv_load_and_init_modules(itv);
1142 
1143 	if (itv->std & V4L2_STD_525_60) {
1144 		itv->is_60hz = 1;
1145 		itv->is_out_60hz = 1;
1146 	} else {
1147 		itv->is_50hz = 1;
1148 		itv->is_out_50hz = 1;
1149 	}
1150 
1151 	itv->yuv_info.osd_full_w = 720;
1152 	itv->yuv_info.osd_full_h = itv->is_out_50hz ? 576 : 480;
1153 	itv->yuv_info.v4l2_src_w = itv->yuv_info.osd_full_w;
1154 	itv->yuv_info.v4l2_src_h = itv->yuv_info.osd_full_h;
1155 
1156 	cx2341x_handler_set_50hz(&itv->cxhdl, itv->is_50hz);
1157 
1158 	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_MPG] = 0x08000;
1159 	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_PCM] = 0x01200;
1160 	itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_MPG] = 0x10000;
1161 	itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_YUV] = 0x10000;
1162 	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_YUV] = 0x08000;
1163 
1164 	/* Setup VBI Raw Size. Should be big enough to hold PAL.
1165 	   It is possible to switch between PAL and NTSC, so we need to
1166 	   take the largest size here. */
1167 	/* 1456 is multiple of 16, real size = 1444 */
1168 	itv->vbi.raw_size = 1456;
1169 	/* We use a buffer size of 1/2 of the total size needed for a
1170 	   frame. This is actually very useful, since we now receive
1171 	   a field at a time and that makes 'compressing' the raw data
1172 	   down to size by stripping off the SAV codes a lot easier.
1173 	   Note: having two different buffer sizes prevents standard
1174 	   switching on the fly. We need to find a better solution... */
1175 	vbi_buf_size = itv->vbi.raw_size * (itv->is_60hz ? 24 : 36) / 2;
1176 	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_VBI] = vbi_buf_size;
1177 	itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_VBI] = sizeof(struct v4l2_sliced_vbi_data) * 36;
1178 
1179 	if (itv->options.radio > 0)
1180 		itv->v4l2_cap |= V4L2_CAP_RADIO;
1181 
1182 	if (itv->options.tuner > -1) {
1183 		struct tuner_setup setup;
1184 
1185 		setup.addr = ADDR_UNSET;
1186 		setup.type = itv->options.tuner;
1187 		setup.mode_mask = T_ANALOG_TV;  /* matches TV tuners */
1188 		if (itv->options.radio > 0)
1189 			setup.mode_mask |= T_RADIO;
1190 		setup.tuner_callback = (setup.type == TUNER_XC2028) ?
1191 			ivtv_reset_tuner_gpio : NULL;
1192 		ivtv_call_all(itv, tuner, s_type_addr, &setup);
1193 		if (setup.type == TUNER_XC2028) {
1194 			static struct xc2028_ctrl ctrl = {
1195 				.fname = XC2028_DEFAULT_FIRMWARE,
1196 				.max_len = 64,
1197 			};
1198 			struct v4l2_priv_tun_config cfg = {
1199 				.tuner = itv->options.tuner,
1200 				.priv = &ctrl,
1201 			};
1202 			ivtv_call_all(itv, tuner, s_config, &cfg);
1203 		}
1204 	}
1205 
1206 	/* The tuner is fixed to the standard. The other inputs (e.g. S-Video)
1207 	   are not. */
1208 	itv->tuner_std = itv->std;
1209 
1210 	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1211 		struct v4l2_ctrl_handler *hdl = itv->v4l2_dev.ctrl_handler;
1212 
1213 		itv->ctrl_pts = v4l2_ctrl_new_std(hdl, &ivtv_hdl_out_ops,
1214 				V4L2_CID_MPEG_VIDEO_DEC_PTS, 0, 0, 0, 0);
1215 		itv->ctrl_frame = v4l2_ctrl_new_std(hdl, &ivtv_hdl_out_ops,
1216 				V4L2_CID_MPEG_VIDEO_DEC_FRAME, 0, 0, 0, 0);
1217 		/* Note: V4L2_MPEG_AUDIO_DEC_PLAYBACK_AUTO is not supported,
1218 		   mask that menu item. */
1219 		itv->ctrl_audio_playback =
1220 			v4l2_ctrl_new_std_menu(hdl, &ivtv_hdl_out_ops,
1221 				V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK,
1222 				V4L2_MPEG_AUDIO_DEC_PLAYBACK_SWAPPED_STEREO,
1223 				1 << V4L2_MPEG_AUDIO_DEC_PLAYBACK_AUTO,
1224 				V4L2_MPEG_AUDIO_DEC_PLAYBACK_STEREO);
1225 		itv->ctrl_audio_multilingual_playback =
1226 			v4l2_ctrl_new_std_menu(hdl, &ivtv_hdl_out_ops,
1227 				V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK,
1228 				V4L2_MPEG_AUDIO_DEC_PLAYBACK_SWAPPED_STEREO,
1229 				1 << V4L2_MPEG_AUDIO_DEC_PLAYBACK_AUTO,
1230 				V4L2_MPEG_AUDIO_DEC_PLAYBACK_LEFT);
1231 		if (hdl->error) {
1232 			retval = hdl->error;
1233 			goto free_i2c;
1234 		}
1235 		v4l2_ctrl_cluster(2, &itv->ctrl_pts);
1236 		v4l2_ctrl_cluster(2, &itv->ctrl_audio_playback);
1237 		ivtv_call_all(itv, video, s_std_output, itv->std);
1238 		/* Turn off the output signal. The mpeg decoder is not yet
1239 		   active so without this you would get a green image until the
1240 		   mpeg decoder becomes active. */
1241 		ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0);
1242 	}
1243 
1244 	/* clear interrupt mask, effectively disabling interrupts */
1245 	ivtv_set_irq_mask(itv, 0xffffffff);
1246 
1247 	/* Register IRQ */
1248 	retval = request_irq(itv->pdev->irq, ivtv_irq_handler,
1249 	     IRQF_SHARED, itv->v4l2_dev.name, (void *)itv);
1250 	if (retval) {
1251 		IVTV_ERR("Failed to register irq %d\n", retval);
1252 		goto free_i2c;
1253 	}
1254 
1255 	retval = ivtv_streams_setup(itv);
1256 	if (retval) {
1257 		IVTV_ERR("Error %d setting up streams\n", retval);
1258 		goto free_irq;
1259 	}
1260 	retval = ivtv_streams_register(itv);
1261 	if (retval) {
1262 		IVTV_ERR("Error %d registering devices\n", retval);
1263 		goto free_streams;
1264 	}
1265 	IVTV_INFO("Initialized card: %s\n", itv->card_name);
1266 
1267 	/* Load ivtv submodules (ivtv-alsa) */
1268 	request_modules(itv);
1269 	return 0;
1270 
1271 free_streams:
1272 	ivtv_streams_cleanup(itv);
1273 free_irq:
1274 	free_irq(itv->pdev->irq, (void *)itv);
1275 free_i2c:
1276 	v4l2_ctrl_handler_free(&itv->cxhdl.hdl);
1277 	exit_ivtv_i2c(itv);
1278 free_io:
1279 	ivtv_iounmap(itv);
1280 free_mem:
1281 	release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
1282 	release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
1283 	if (itv->has_cx23415)
1284 		release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
1285 free_worker:
1286 	kthread_stop(itv->irq_worker_task);
1287 err:
1288 	if (retval == 0)
1289 		retval = -ENODEV;
1290 	IVTV_ERR("Error %d on initialization\n", retval);
1291 
1292 	v4l2_device_unregister(&itv->v4l2_dev);
1293 	kfree(itv);
1294 	return retval;
1295 }
1296 
1297 int ivtv_init_on_first_open(struct ivtv *itv)
1298 {
1299 	struct v4l2_frequency vf;
1300 	/* Needed to call ioctls later */
1301 	struct ivtv_open_id fh;
1302 	int fw_retry_count = 3;
1303 	int video_input;
1304 
1305 	fh.itv = itv;
1306 	fh.type = IVTV_ENC_STREAM_TYPE_MPG;
1307 
1308 	if (test_bit(IVTV_F_I_FAILED, &itv->i_flags))
1309 		return -ENXIO;
1310 
1311 	if (test_and_set_bit(IVTV_F_I_INITED, &itv->i_flags))
1312 		return 0;
1313 
1314 	while (--fw_retry_count > 0) {
1315 		/* load firmware */
1316 		if (ivtv_firmware_init(itv) == 0)
1317 			break;
1318 		if (fw_retry_count > 1)
1319 			IVTV_WARN("Retry loading firmware\n");
1320 	}
1321 
1322 	if (fw_retry_count == 0) {
1323 		set_bit(IVTV_F_I_FAILED, &itv->i_flags);
1324 		return -ENXIO;
1325 	}
1326 
1327 	/* Try and get firmware versions */
1328 	IVTV_DEBUG_INFO("Getting firmware version..\n");
1329 	ivtv_firmware_versions(itv);
1330 
1331 	if (itv->card->hw_all & IVTV_HW_CX25840)
1332 		v4l2_subdev_call(itv->sd_video, core, load_fw);
1333 
1334 	vf.tuner = 0;
1335 	vf.type = V4L2_TUNER_ANALOG_TV;
1336 	vf.frequency = 6400; /* the tuner 'baseline' frequency */
1337 
1338 	/* Set initial frequency. For PAL/SECAM broadcasts no
1339 	   'default' channel exists AFAIK. */
1340 	if (itv->std == V4L2_STD_NTSC_M_JP) {
1341 		vf.frequency = 1460;	/* ch. 1 91250*16/1000 */
1342 	}
1343 	else if (itv->std & V4L2_STD_NTSC_M) {
1344 		vf.frequency = 1076;	/* ch. 4 67250*16/1000 */
1345 	}
1346 
1347 	video_input = itv->active_input;
1348 	itv->active_input++;	/* Force update of input */
1349 	ivtv_s_input(NULL, &fh, video_input);
1350 
1351 	/* Let the VIDIOC_S_STD ioctl do all the work, keeps the code
1352 	   in one place. */
1353 	itv->std++;		/* Force full standard initialization */
1354 	itv->std_out = itv->std;
1355 	ivtv_s_frequency(NULL, &fh, &vf);
1356 
1357 	if (itv->card->v4l2_capabilities & V4L2_CAP_VIDEO_OUTPUT) {
1358 		/* Turn on the TV-out: ivtv_init_mpeg_decoder() initializes
1359 		   the mpeg decoder so now the saa7127 receives a proper
1360 		   signal. */
1361 		ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
1362 		ivtv_init_mpeg_decoder(itv);
1363 	}
1364 
1365 	/* On a cx23416 this seems to be able to enable DMA to the chip? */
1366 	if (!itv->has_cx23415)
1367 		write_reg_sync(0x03, IVTV_REG_DMACONTROL);
1368 
1369 	ivtv_s_std_enc(itv, itv->tuner_std);
1370 
1371 	/* Default interrupts enabled. For the PVR350 this includes the
1372 	   decoder VSYNC interrupt, which is always on. It is not only used
1373 	   during decoding but also by the OSD.
1374 	   Some old PVR250 cards had a cx23415, so testing for that is too
1375 	   general. Instead test if the card has video output capability. */
1376 	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1377 		ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT | IVTV_IRQ_DEC_VSYNC);
1378 		ivtv_set_osd_alpha(itv);
1379 		ivtv_s_std_dec(itv, itv->tuner_std);
1380 	} else {
1381 		ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT);
1382 	}
1383 
1384 	/* Setup initial controls */
1385 	cx2341x_handler_setup(&itv->cxhdl);
1386 	return 0;
1387 }
1388 
1389 static void ivtv_remove(struct pci_dev *pdev)
1390 {
1391 	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
1392 	struct ivtv *itv = to_ivtv(v4l2_dev);
1393 	int i;
1394 
1395 	IVTV_DEBUG_INFO("Removing card\n");
1396 
1397 	flush_request_modules(itv);
1398 
1399 	if (test_bit(IVTV_F_I_INITED, &itv->i_flags)) {
1400 		/* Stop all captures */
1401 		IVTV_DEBUG_INFO("Stopping all streams\n");
1402 		if (atomic_read(&itv->capturing) > 0)
1403 			ivtv_stop_all_captures(itv);
1404 
1405 		/* Stop all decoding */
1406 		IVTV_DEBUG_INFO("Stopping decoding\n");
1407 
1408 		/* Turn off the TV-out */
1409 		if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
1410 			ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0);
1411 		if (atomic_read(&itv->decoding) > 0) {
1412 			int type;
1413 
1414 			if (test_bit(IVTV_F_I_DEC_YUV, &itv->i_flags))
1415 				type = IVTV_DEC_STREAM_TYPE_YUV;
1416 			else
1417 				type = IVTV_DEC_STREAM_TYPE_MPG;
1418 			ivtv_stop_v4l2_decode_stream(&itv->streams[type],
1419 				V4L2_DEC_CMD_STOP_TO_BLACK | V4L2_DEC_CMD_STOP_IMMEDIATELY, 0);
1420 		}
1421 		ivtv_halt_firmware(itv);
1422 	}
1423 
1424 	/* Interrupts */
1425 	ivtv_set_irq_mask(itv, 0xffffffff);
1426 	del_timer_sync(&itv->dma_timer);
1427 
1428 	/* Kill irq worker */
1429 	kthread_flush_worker(&itv->irq_worker);
1430 	kthread_stop(itv->irq_worker_task);
1431 
1432 	ivtv_streams_cleanup(itv);
1433 	ivtv_udma_free(itv);
1434 
1435 	v4l2_ctrl_handler_free(&itv->cxhdl.hdl);
1436 
1437 	exit_ivtv_i2c(itv);
1438 
1439 	free_irq(itv->pdev->irq, (void *)itv);
1440 	ivtv_iounmap(itv);
1441 
1442 	release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
1443 	release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
1444 	if (itv->has_cx23415)
1445 		release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
1446 
1447 	pci_disable_device(itv->pdev);
1448 	for (i = 0; i < IVTV_VBI_FRAMES; i++)
1449 		kfree(itv->vbi.sliced_mpeg_data[i]);
1450 
1451 	pr_info("Removed %s\n", itv->card_name);
1452 
1453 	v4l2_device_unregister(&itv->v4l2_dev);
1454 	kfree(itv);
1455 }
1456 
1457 /* define a pci_driver for card detection */
1458 static struct pci_driver ivtv_pci_driver = {
1459       .name =     "ivtv",
1460       .id_table = ivtv_pci_tbl,
1461       .probe =    ivtv_probe,
1462       .remove =   ivtv_remove,
1463 };
1464 
1465 static int __init module_start(void)
1466 {
1467 	pr_info("Start initialization, version %s\n", IVTV_VERSION);
1468 
1469 	/* Validate parameters */
1470 	if (ivtv_first_minor < 0 || ivtv_first_minor >= IVTV_MAX_CARDS) {
1471 		pr_err("Exiting, ivtv_first_minor must be between 0 and %d\n",
1472 		     IVTV_MAX_CARDS - 1);
1473 		return -1;
1474 	}
1475 
1476 	if (ivtv_debug < 0 || ivtv_debug > 2047) {
1477 		ivtv_debug = 0;
1478 		pr_info("Debug value must be >= 0 and <= 2047\n");
1479 	}
1480 
1481 	if (pci_register_driver(&ivtv_pci_driver)) {
1482 		pr_err("Error detecting PCI card\n");
1483 		return -ENODEV;
1484 	}
1485 	pr_info("End initialization\n");
1486 	return 0;
1487 }
1488 
1489 static void __exit module_cleanup(void)
1490 {
1491 	pci_unregister_driver(&ivtv_pci_driver);
1492 }
1493 
1494 /* Note: These symbols are exported because they are used by the ivtvfb
1495    framebuffer module and an infrared module for the IR-blaster. */
1496 EXPORT_SYMBOL(ivtv_set_irq_mask);
1497 EXPORT_SYMBOL(ivtv_api);
1498 EXPORT_SYMBOL(ivtv_vapi);
1499 EXPORT_SYMBOL(ivtv_vapi_result);
1500 EXPORT_SYMBOL(ivtv_clear_irq_mask);
1501 EXPORT_SYMBOL(ivtv_debug);
1502 #ifdef CONFIG_VIDEO_ADV_DEBUG
1503 EXPORT_SYMBOL(ivtv_fw_debug);
1504 #endif
1505 EXPORT_SYMBOL(ivtv_reset_ir_gpio);
1506 EXPORT_SYMBOL(ivtv_udma_setup);
1507 EXPORT_SYMBOL(ivtv_udma_unmap);
1508 EXPORT_SYMBOL(ivtv_udma_alloc);
1509 EXPORT_SYMBOL(ivtv_udma_prepare);
1510 EXPORT_SYMBOL(ivtv_init_on_first_open);
1511 EXPORT_SYMBOL(ivtv_firmware_check);
1512 
1513 module_init(module_start);
1514 module_exit(module_cleanup);
1515